Portland, OR -- Deputies say three victims, including the gunman, died in the shooting at a mall in a Portland suburb Tuesday.

The names of the victims and the shooter have not been released.

Officers responded to Clackamas Town Center in Portland around 3:30 p.m. Tuesday.

According to the Statesman Journal, witnesses reported seeing a man with a semiautomatic rifle who fired as many as 20 shots in the mall. The suspect killed two people, and seriously injured another, before killing himself.

No other serious injuries were reported.

The Clackamas sheriff's office reported that more than 100 officers were on the scene. Teams went in later to find anyone who might be injured or hiding in the mall.

Investigators say the shooting started in the mall, but where it started is still unclear.

There is still no information on the shooters motive, and police are still asking witnesses for information. Officers are asking anyone with family in the area to be patient as they wait to hear from them.